Posner (plural Posners)
- A surname, from German.
- According to the 2010 United States Census, Posner is the 10204th most common surname in the United States, belonging to 3157 individuals. Posner is most common among White (94.81%) individuals.
- Hanks, Patrick, editor (2003), “Posner”, in Dictionary of American Family Names, New York City: Oxford University Press, →ISBN